Stephen B. Prepas, M.D.

Specialties: Pediatric Ophthalmology and Strabismus

During this difficult time, we are open for urgent problems and telemedicine (video) exams. The office will be open everyday. If you’d like to make an appointment, either in the office or by telemedicine, please call the office, and we will arrange a time. If a telemedicine exam is appropriate, we’ll use either Zoom or FaceTime. Stay healthy!

My new glassesBased in Orange County, California, Dr. Stephen Prepas has been practicing medicine for 40 years. Dr. Prepas is Board Certified with the American Board of Ophthalmology. His undergraduate studies were at the University of California, Los Angeles in 1971. In 1975, he attended medical school at the University of California, Irvine, and in 1975, interned at Los Angeles County Hospital – University of Southern California.

He was awarded his Pediatric Ophthalmology and Strabismus Fellowship in Brooklyn, N.Y. during 1979-1980.

Affiliated with Hoag Hospital

Hoag LogoDr. Prepas is on staff at Hoag Memorial Hospital, based in Newport Beach, California. He served as the Department of Ophthalmology Chair from 1992-1994.

Hoag Memorial Hospital has a medical staff of more than 1,000 physicians representing a broad range of specialties.

Professional Affiliations/Memberships:

Throughout his successful practice, Dr. Prepas has been and remains active in numerous organizations, and has served on medical boards and associations, including the following:


As a volunteer, since 1980, Dr. Prepas has remained committed to medical assistance and procedures both in the U.S. and for developing nations worldwide.


  • Pediatric Ophthalmology
  • Strabismus
  • Adult General Eye Exams
  • Optical Services
  • Optometrist - On Site


Monday - Thursday
9:00 a.m. - 12:00 p.m.
2:00 p.m. - 5:00 p.m.

Closed for lunch
12:00 p.m. - 2:00 p.m.

9:00 a.m. - 12.00 p.m

From our Blog

New Ideas in Amblyopia

New Ideas in Amblyopia

Amblyopia is a major cause of vision loss in children. When the eye and brain are not working together properly, vision is decreased in the eye that is not being used correctly. The major causes of amblyopia are misalignment (or strabismus), unequal refractions, or a...

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Nearsightedness (Myopia)

Nearsightedness (Myopia)

One of the most common problems I see in kids is something I’m quite familiar with (since I have it myself!): Myopia, which is commonly called nearsightedness. Those of us with this problem can see fine up close, but things get blurry at a distance. It is usually...

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Depth Perception & 3D Movies

Depth Perception & 3D Movies

As entertainment ventures into 3D formats, from movies such as "Avatar” to the new 3D TV’s and Video Games, many of us question what effect these new technologies will have on our eyes. Before looking into these effects, it is useful to review what 3D actually is and...

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